Borg Backup (for similar reasons as Restic) essentially shifted backup from my "I-don't-but-I-should" list to my "solved problems" list. Is there anything similar for binary distribution?

Here's what I mean. I develop a software/firmware stack that is typically delivered to users as a set of large (100M) tarballs and binary images. Even though the vast majority of the payload does not change from release to release, it really has proven necessary to distribute just the final blobs.

Technologically, it's almost identical, but distribution implies a different set of access controls and an Internet-friendly user interface.

I see the idea floating around in e.g. NextCloud forums but this seems like a relatively compact problem without a obvious candidates to solve it.